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# Convert cm to km

Please provide values below to convert centimeter [cm] to kilometer [km], or vice versa.

 From: centimeter To: kilometer

### Centimeter

Definition: A centimeter (symbol: cm) is a unit of length in the International System of Units (SI), the current form of the metric system. It is defined as 1/100 meters.

History/origin: A centimeter is based on the SI unit meter, and as the prefix "centi" indicates, is equal to one hundredth of a meter. Metric prefixes range from factors of 10-18 to 1018 based on a decimal system, with the base (in this case the meter) having no prefix and having a factor of 1. Learning some of the more commonly used metric prefixes, such as kilo-, mega-, giga-, tera-, centi-, milli-, micro-, and nano-, can be helpful for quickly navigating metric units.

Current use: The centimeter, like the meter, is used in all sorts of applications worldwide (in countries that have undergone metrication) in instances where a smaller denomination of the meter is required. Height is commonly measured in centimeters outside of countries like the United States.

### Kilometer

Definition: A kilometer (symbol: km) is a unit of length in the International System of Units (SI). One kilometer is equivalent to 0.6214 miles.

History/origin: The prefix kilo- is a metric prefix indicating one thousand. One kilometer is therefore one thousand meters. The origin of the kilometer is linked to that of the meter, and its current definition as the distance traveled by light in 1/299 792 458 second. This definition is subject to change, but the relationship between the meter and the kilometer will remain constant.

Current use: It is currently the official unit of measurement for expressing distances between geographical places on land in most of the world. However, there still remain a number of countries that primarily use the mile instead of the kilometer including the United States and the United Kingdom (UK). Unlike the United States, the UK has adopted the metric system; while the metric system is widely used in government, commerce, and industry, remnants of the imperial system can still be seen in the UK's use of miles in its road systems.

### Centimeter to Kilometer Conversion Table

Centimeter [cm]Kilometer [km]
0.01 cm1.0E-7 km
0.1 cm1.0E-6 km
1 cm1.0E-5 km
2 cm2.0E-5 km
3 cm3.0E-5 km
5 cm5.0E-5 km
10 cm0.0001 km
20 cm0.0002 km
50 cm0.0005 km
100 cm0.001 km
1000 cm0.01 km

### How to Convert Centimeter to Kilometer

1 cm = 1.0E-5 km
1 km = 100000 cm

Example: convert 15 cm to km:
15 cm = 15 × 1.0E-5 km = 0.00015 km